I have a Norstar at location A connected to a channel bank fed from location B. 15 analog TN's are programmed on the OPT. 81C(location B) and at location A those line are wired in to the Norstar. They can dial a 4 digit extentionS at location B but can not tranfer to location B also voicemail lights do not work on the Norstar. They have 3 digit extentions on the Nortsar. Can any one lead me in the right direction as to what I would need to do to get voicemail lights to work on the Norstar and get transferring to also work.